Create a --rebuild-org parameter for cci flow run

[Julian88Tex]

When running a flow, often I would like to delete a previously created scratch org and run the flow in a clean org. Currently, this requires first running cci org scratch_delete <orgname> and then the flow. It would be convenient to have a --rebuild-org parameter that is similar to --delete-org but with rebuild it first deletes the existing scratch org but it does not delete the config.

Additionally, these parameters could be used in together so that an org is both rebuilt and then deleted at end of a flow.

[davidmreed]

Tracking as W-10502624